LIGHTROOM / CAMERA RAW - Programmable white balance and exposure pipette

I'd love to have an addition to the white balance pipette whereby the user could sample a spot of an image, grade it for white balance and exposure and then apply those settings, via the pipette, to other shots in a set. The most obvious application would be sampling a portrait subject's key light skin tone, grading it until it looks perfect for that individual and then applying that to all images in a set, even if lighting and exposure vary. I shoot real estate and, often, a house may have a coloured ceiling (not white). Normally I just white balance on the ceiling but in these cases it doesn't work. I also use fill flash to help masking in window exposures and the ability to simply say, "the window frames look like this" would be very helpful